At the expo, learn how to convert irrigation to drip, remove lawn, transition to more drought-tolerant landscaping, install rain barrels and other ways to start saving water now. On the self-guided tour, see local landscapes that have made the switch from lawn to “greener” alternatives.

See dozens of “little trees” and learn how to create your own bonsai. Demonstrations at 2 p.m. both days by botanist and bonsai nurseryman Yuzo Maruyama. Sales of plants and bonsai-related items will also be available.